7th Grade Science Midterm 2024

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What should you do before starting a science experiment?

Back

Read all the instructions very carefully.

Front

How does the Sun transfer energy to Earth?

Back

By electromagnetic waves.

Front

What is the direction of energy flow when there is a temperature difference?

Back

Energy flows from an area of higher temperature to an area of lower temperature.

Front

In which medium does sound travel the fastest?

Back

Sound travels fastest in steel.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to temperature.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases).

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it comes into contact with another object.